News & Analysis as of

Section 112 Claim Construction Indefiniteness

Ervin Cohen & Jessup LLP

Patents Must Describe the “How” - A Reminder That Functional Claims Need Structural Support

On April 30, 2025, the Federal Circuit issued a decision in Fintiv, Inc. v. PayPal Holdings, Inc. (No. 23-2312), issued on April 30, 2025, upholding the invalidation of Finitiv Inc.’s (“Finitiv”) mobile wallet patents related...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - September 2024 #3

Vascular Solutions LLC v. Medtronic, Inc., Appeal No. 24-1398 (Fed. Cir. Sept. 16, 2024) In our Case of the Week, the Federal Circuit evaluated certain heavily litigated claims directed to guide catheters. The patents...more

Sheppard Mullin Richter & Hampton LLP

2023 Federal Circuit Case Summaries

We are excited to share Sheppard Mullin’s inaugural quarterly report on key Federal Circuit decisions. The Spring 2023 Quarterly Report provides summaries of most key patent law-related decisions from January 1, 2023 to March...more

McDermott Will & Emery

Establishing Indefiniteness Requires More Than Identifying “Unanswered Questions” Part II

McDermott Will & Emery on

Earlier this year, the US Court of Appeals for the Federal Circuit reversed a district court decision for relying on an incorrect standard for indefiniteness. (Nature Simulation Systems Inc. v. Autodesk, Inc). Now, in...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - March 2021 #2

Rain Computing, Inc. v. Samsung Electronics America, Inc., Appeal Nos. 2020-1646, -1656 (Fed. Cir. Mar. 2, 2021) - Our Case of the Week focuses on the issue of indefiniteness, and particularly, terms that are construed as...more

McDermott Will & Emery

PTO: Board to Align Indefiniteness Approach in AIA and District Court Proceedings

McDermott Will & Emery on

On January 6, 2021, US Patent and Trademark Office (PTO) Director Andrei Iancu, Commissioner for Patents Andrew Hirshfeld and Chief Administrative Patent Judge Scott Boalick issued a memorandum to the members of the Patent...more

Knobbe Martens

Federal Circuit Review - February 2020

Knobbe Martens on

PTAB May Not Cancel Claims on the Grounds of Indefiniteness in an IPR Proceeding - In Samsung Electronics America v. Prisua Engineering Corp., Appeal No. 19-1169, the Federal Circuit held that the Patent Trial and Appeal...more

Knobbe Martens

PTAB May Not Cancel Claims on the Grounds of Indefiniteness in an IPR Proceeding

Knobbe Martens on

SAMSUNG ELECTRONICS AMERICA v. PRISUA ENGINEERING CORP. Before Prost, Newman, and Bryson. Appeal from the Patent Trial and Appeal Board. Summary: The Patent Trial and Appeal Board (“PTAB”) may not cancel claims on the...more

Knobbe Martens

Federal Circuit Review - October 2019

Knobbe Martens on

The PTAB Cannot Approve or Deny Certificates of Correction - In Honeywell International, Inc. v. Arkema Inc., Arkema France, Appeal Nos. 2018-1151, -1153, the Patent Trial and Appeal Board (“Board”) does not have the...more

Bradley Arant Boult Cummings LLP

The Risk of Using “Consisting Essentially of” in Patent Claims

The legal meaning of the transition language “consisting essentially of” is well-established in Federal Circuit case law and is generally construed to mean that the composition or formulation (a) necessarily includes the...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Strategies and Insights - May 2019: Court's Infringement Indefiniteness Does Not Dictate Validity Indefiniteness at PTAB

In IPR2018-00272, the Board denied a motion to terminate brought by a Patent Owner who argued that a district court’s finding of indefiniteness required termination of the PTAB proceedings for U.S. Patent. 9,393,208....more

Jones Day

After SAS, Indefinite Claims Can Be A Definite Problem For IPR Petitioners

Jones Day on

The definiteness requirement for patent claims is set forth in Section 112(b), mandating that a patent specification conclude with one or more claims “particularly pointing out and distinctly claiming subject matter which the...more

Jones Day

In Precedential Decision, Board Says Packard, Not Nautilus, Governs Indefiniteness During Pre-Issuance Examination

Jones Day on

...In a recent (and rare) precedential decision, the Board reaffirmed that the Supreme Court’s decision in Nautilus does not change “the USPTO’s long-standing approach to indefiniteness” in the context of pre-issuance...more

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